/**
 * This file is part of 1genia trampoline
 * Copyright (C) 2007 1genia (contact@1genia.com)
 *
 * This library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; version 3 of the License. 
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details. 
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; see the file COPYING.TXT.  If not,
 * write to the Free Software Foundation, Inc., 51 Franklin Street,
 * Fifth Floor, Boston, MA 02110-1301, USA. 
 **/
package com.genia.toolbox.web.manager.impl;

import com.genia.toolbox.basics.exception.technical.TechnicalException;
import com.genia.toolbox.basics.manager.ExceptionManager;

/**
 * implementation of <code>UrlManager</code> that allow to generate absolute
 * url if and only if the url correspond to a file in the wbe application root
 * context.
 */
public class CheckingAbsoluteUrlManager
    extends AbsoluteUrlManager
{

  /**
   * the {@link ExceptionManager} to use.
   */
  private ExceptionManager exceptionManager;



  /**
   * check if the given url is correct and must be displayed.
   * 
   * @param url
   *          the url to check
   * @return <code>true</code> if and only if the url is correct and must be
   *         displayed
   * @throws TechnicalException
   *           if an error occured
   */
  @Override
  protected boolean checkUrl(String url)
      throws TechnicalException
  {
    if (!url.startsWith("/")) {
      return true;
    }
    try {
      return (getContext().getSession().getServletContext().getResource(url) != null);
    }
    catch (Exception e) {
      throw getExceptionManager().convertException(e);
    }
  }



  /**
   * getter for the exceptionManager property.
   * 
   * @return the exceptionManager
   */
  public ExceptionManager getExceptionManager()
  {
    return exceptionManager;
  }



  /**
   * setter for the exceptionManager property.
   * 
   * @param exceptionManager
   *          the exceptionManager to set
   */
  public void setExceptionManager(ExceptionManager exceptionManager)
  {
    this.exceptionManager = exceptionManager;
  }

}
